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[MSan] Make unaligned load/store functions compatible for both endians 

Reviewers: eugenis

Subscribers: jaydeep, sagar, llvm-commits

Differential Revision: http://reviews.llvm.org/D17371

llvm-svn: 261513
This commit is contained in:
Mohit K. Bhakkad 2016-02-22 06:16:28 +00:00
parent d8039df523
commit 452417ac12
1 changed files with 4 additions and 4 deletions
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8
compiler-rt/lib/msan/msan.cc
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@ -580,13 +580,13 @@ u32 __msan_get_umr_origin() {
}
u16 __sanitizer_unaligned_load16(const uu16 *p) {
__msan_retval_tls[0] = *(uu16 *)MEM_TO_SHADOW((uptr)p);
*(uu16 *)&__msan_retval_tls[0] = *(uu16 *)MEM_TO_SHADOW((uptr)p);
if (__msan_get_track_origins())
__msan_retval_origin_tls = GetOriginIfPoisoned((uptr)p, sizeof(*p));
return *p;
}
u32 __sanitizer_unaligned_load32(const uu32 *p) {
__msan_retval_tls[0] = *(uu32 *)MEM_TO_SHADOW((uptr)p);
*(uu32 *)&__msan_retval_tls[0] = *(uu32 *)MEM_TO_SHADOW((uptr)p);
if (__msan_get_track_origins())
__msan_retval_origin_tls = GetOriginIfPoisoned((uptr)p, sizeof(*p));
return *p;
@ -598,7 +598,7 @@ u64 __sanitizer_unaligned_load64(const uu64 *p) {
return *p;
}
void __sanitizer_unaligned_store16(uu16 *p, u16 x) {
u16 s = __msan_param_tls[1];
u16 s = *(uu16 *)&__msan_param_tls[1];
*(uu16 *)MEM_TO_SHADOW((uptr)p) = s;
if (s && __msan_get_track_origins())
if (uu32 o = __msan_param_origin_tls[2])
@ -606,7 +606,7 @@ void __sanitizer_unaligned_store16(uu16 *p, u16 x) {
*p = x;
}
void __sanitizer_unaligned_store32(uu32 *p, u32 x) {
u32 s = __msan_param_tls[1];
u32 s = *(uu32 *)&__msan_param_tls[1];
*(uu32 *)MEM_TO_SHADOW((uptr)p) = s;
if (s && __msan_get_track_origins())
if (uu32 o = __msan_param_origin_tls[2])